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Aprilaire 400 Humidifier Parts

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    Select a diagram to view its parts

    Parts

    Diagram

    Parts
    1
    2
    3
    4A
    4B
    5A
    5B
    6
    7
    8
    9
    10
    11
    12
    13A
    13B
    13C
    15
    16
    17A
    17B
    18A
    18B
    19
    20
    24

    Parts

    1. 1
      Water Panel Humidifier Pad
      $44.95
    2. 1
      Maintenance Kit Model 400
      Maintenance Kit Model 400
      SKU: 4788
      $177.33
    3. 2
      Scale Control Insert
      $24.78
    4. 2
      Maintenance Kit Model 400
      Maintenance Kit Model 400
      SKU: 4788
      $177.33
    5. 3
      Water Distribution Tray
      $32.03
    6. 3
      Maintenance Kit Model 400
      Maintenance Kit Model 400
      SKU: 4788
      $177.33
    7. 4A
      Base
      Base
      SKU: 4404
    8. 4B
      Base
      Base
      SKU: 4734
      $145.88
    9. 5A
      Cover
      Cover
      SKU: 4329
    10. 5B
      Cover
      Cover
      SKU: 4728
      $143.12
    11. 6
      Water Level Sensor
      $49.45
    12. 7
      Solenoid Valve
      Solenoid Valve
      SKU: 4040
      $118.45
    13. 8
      Strainer Screen
      $10.06
    14. 9
      Saddle Valve
      Saddle Valve
      SKU: 4001
      $5.00
    15. 10
      Yellow Orifice
      $5.12
    16. 11
      Feed Tube
      Feed Tube
      SKU: 4335
      $14.95
    17. 12
      Transformer
      Transformer
      SKU: 4010
      $9.95
    18. 13A
      AutoTrac Humidistat Controller
      $172.33
    19. 13B
      Automatic Humidistat Controller
      $225.69
    20. 13C
      Analog Humidistat
      Analog Humidistat
      SKU: 4655
      $29.95
    21. 15
      Damper
      Damper
      SKU: 4332
      $47.04
    22. 16
      Name Plate
      Name Plate
      SKU: 4409
      $22.20
    23. 16
      Name Plate For Model 400
      Name Plate For Model 400
      SKU: 4880
      $22.08
    24. 17A
      Hole Plug
      Hole Plug
      SKU: 4408
    25. 17B
      Hole Plug
      Hole Plug
      SKU: 4741
      $12.42
    26. 18A
      Resistor Case Manual Label
    27. 18B
      Resistor
      Resistor
      SKU: 4737
    28. 19
      Float
      Float
      SKU: 4406
      $22.37
    29. 20
      Float Cover
      Float Cover
      SKU: 4405
      $42.44
    30. 24
      Gasket
      Gasket
      SKU: 4305
      $7.19

    Parts Not In Diagram

    1. Not Shown
      Sensor
      Sensor
      SKU: 8052
      $15.58
    2. Not Shown
      Blower Activation Relay
      $62.79
    3. Not Shown
      Sensor
      Sensor
      SKU: 8052
      (Substitute part number)
      $15.58
    4. Not Shown
      Current Sensing Relay 24V
      $69.17
    5. Not Shown
      Saddle Valve Adaptor
    6. Not Shown
      Shock Arrestor
      $199.99
    Installation Accessories
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